JPS5743232A - Data compression device - Google Patents

Data compression device

Info

Publication number
JPS5743232A
JPS5743232A JP9905481A JP9905481A JPS5743232A JP S5743232 A JPS5743232 A JP S5743232A JP 9905481 A JP9905481 A JP 9905481A JP 9905481 A JP9905481 A JP 9905481A JP S5743232 A JPS5743232 A JP S5743232A
Authority
JP
Japan
Prior art keywords
data
value
latches
sample
latch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP9905481A
Other languages
Japanese (ja)
Other versions
JPH0157369B2 (en
Inventor
Pii Biibe Richiyaado
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hewlett Packard Japan Inc
Original Assignee
Yokogawa Hewlett Packard Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yokogawa Hewlett Packard Ltd filed Critical Yokogawa Hewlett Packard Ltd
Publication of JPS5743232A publication Critical patent/JPS5743232A/en
Publication of JPH0157369B2 publication Critical patent/JPH0157369B2/ja
Granted legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7232—Signal processing specially adapted for physiological signals or for diagnostic purposes involving compression of the physiological signal, e.g. to extend the signal recording period
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Veterinary Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physiology (AREA)
  • Psychiatry (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Medical Treatment And Welfare Office Work (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE:To select a data sample having the largest absolute difference as a display sample, by determining the absolute difference between the value of each data sample of a digital data representing electric activity of a heart and the average value of data sample preceding thereto. CONSTITUTION:A signal from an analog signal source 12 such as an ECG (electrocardiogram) wave is converted into a digital sample value at an A/D converter 14, applied to a latch L1 and each data of the group is stored while the samples are shifted in shift registers L2-L4. Each data of the latches L1-L4 is subtracted at subtractors 26-32 with the value of the latch L5 storing the average value of the data sample of the preceding group, and absolute processing is made at absolute circuits 26'-32', the respective output selects the maximum value at comparators 34, 40, 46, and an output is obtained from one of the outputs a'-d' of gates 6''-9'', one output from the latches L1-L4 is set to one of the latches L6-L9 and applied to a display means 25. The average value of the content of the latches L1-L4 is supplied to the latch L5.
JP9905481A 1980-07-02 1981-06-25 Data compression device Granted JPS5743232A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16516980A 1980-07-02 1980-07-02

Publications (2)

Publication Number Publication Date
JPS5743232A true JPS5743232A (en) 1982-03-11
JPH0157369B2 JPH0157369B2 (en) 1989-12-05

Family

ID=22597738

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9905481A Granted JPS5743232A (en) 1980-07-02 1981-06-25 Data compression device

Country Status (2)

Country Link
JP (1) JPS5743232A (en)
GB (1) GB2069264A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1192654A (en) * 1982-01-11 1985-08-27 Technicare Corporation Ultrasonic image storage device and method
GB9114177D0 (en) * 1991-07-01 1991-08-21 Marconi Instruments Ltd Methods of reducing the size of a display whilst substantially maintaining its information content
US8935039B2 (en) * 2010-12-13 2015-01-13 Korea Railroad Research Institute Method for reducing detection data of a monitoring device in a vehicle, and method for monitoring a vehicle defect in near real time using same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4960683A (en) * 1972-10-13 1974-06-12
JPS5022547A (en) * 1973-05-29 1975-03-11

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4960683A (en) * 1972-10-13 1974-06-12
JPS5022547A (en) * 1973-05-29 1975-03-11

Also Published As

Publication number Publication date
JPH0157369B2 (en) 1989-12-05
GB2069264A (en) 1981-08-19

Similar Documents

Publication Publication Date Title
JPS5743232A (en) Data compression device
JPS5743233A (en) Data compressor
EP0398418A3 (en) High speed analog-to-digital converter
JPS56126900A (en) Digital filter
JPS5625827A (en) Coding unit
JPS5625825A (en) Analog-digital conversion circuit
Hejhal Linear extremal problems for analytic functions with interior side conditions
JPS56147517A (en) Analog-to-digital conversion circuit
JPS5620329A (en) Decoding circuit
JPS57199321A (en) Digital smoothing system for sampling value
JPS5666977A (en) Picture gradation property conversion device
BELETSKII Recursive discrete-Fourier-transformation algorithm(Rekurrentnyi algoritm diskretnogo preobrazovaniia Fur'e)
JPS6486271A (en) Accumulator
JPS5631225A (en) A/d converter
JPS6429024A (en) Digital peak detector
JPS5489546A (en) Signal processing system
JPS575430A (en) Binary coded decimal converter
JPS57159117A (en) Channel selection system
JPS57160220A (en) Analog to digital converter
JPS55918A (en) Linear deltam digital addition system
JPS57129521A (en) Analog-to-digital converting system
JPS57207425A (en) Digital-to-analog converting circuit
JPS6441569A (en) Image signal processor
JPS6464418A (en) D-a converting device
JPS6468798A (en) Effect adder